private void GridPreviewMouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
try
{
if (!IsDragging)
{
return;
}
//get the target item
if (grid.SelectedItem != null)
{
var targetItem = ((DataRowView)grid.SelectedItem).Row;
if (targetItem != null && !ReferenceEquals(DraggedItem, targetItem))
{
Loading = true;
var row = ColumnChooserDataTable.NewRow();
row[0] = DraggedItem[0];
row[1] = DraggedItem[1];
row[2] = DraggedItem[2];
var rowToBemoved =
ColumnChooserDataTable.AsEnumerable().First(
r => Convert.ToString(r["columnField"]) == Convert.ToString(DraggedItem["columnField"]));
ColumnChooserDataTable.Rows.Remove(rowToBemoved);
var currentTargetRow = ColumnChooserDataTable.AsEnumerable().First(
r => Convert.ToString(r["columnField"]) == Convert.ToString(targetItem["columnField"]));
int targetIndex = ColumnChooserDataTable.Rows.IndexOf(currentTargetRow);
if (targetIndex == 0)
{
targetIndex++;
}
ColumnChooserDataTable.Rows.InsertAt(row, targetIndex);
var previousColumnFieldName =
Convert.ToString(ColumnChooserDataTable.Rows[targetIndex - 1]["columnField"]);
var columnCollection = MainGrid.Columns;
var columns = columnCollection.ToList();
columns.Sort(CompareColumnPosition);
var pos = 0;
columns.ForEach(c =>
{
c.DisplayIndex = pos;
pos++;
});
var previousVisiblePosition = previousColumnFieldName == "(Select All)"
? 0
: MainGrid.Columns[
GetColumnIndex(MainGrid.Columns, previousColumnFieldName)
].DisplayIndex;
var currentFiledName = Convert.ToString(ColumnChooserDataTable.Rows[targetIndex]["columnField"]);
MainGrid.Columns[GetColumnIndex(MainGrid.Columns, currentFiledName)].DisplayIndex =
previousVisiblePosition + 1;
columns.Clear();
columns.AddRange(columnCollection);
if (previousColumnFieldName == "(Select All)")
{
columns.ForEach(c =>
{
if (c.SortMemberPath != currentFiledName)
{
if (c.DisplayIndex + 1 < columns.Count)
{
c.DisplayIndex = c.DisplayIndex + 1;
}
else
{
c.DisplayIndex = columns.Count - 1;
}
}
});
}
else
{
columns.ForEach(c =>
{
if (c.SortMemberPath != currentFiledName &&
c.SortMemberPath != previousColumnFieldName)
{
if (c.DisplayIndex + 1 < columns.Count)
{
c.DisplayIndex = c.DisplayIndex + 1;
}
else
{
c.DisplayIndex = columns.Count - 1;
}
}
});
}
grid.SelectedItem = DraggedItem;
//Reorder row summaries after reordering column using column chosser.
foreach (var mainGridColumn in MainGrid.Columns)
{
var rowSummariesColumn = MainGrid.RowSummariesGrid.Columns.FirstOrDefault(column => column.SortMemberPath == mainGridColumn.SortMemberPath);
if (rowSummariesColumn != null)
{
rowSummariesColumn.DisplayIndex = mainGridColumn.DisplayIndex;
}
}
Loading = false;
}
ResetDragDrop();
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
}
}
private void CheckBoxChecked(object sender, RoutedEventArgs e)
{
try
{
if (Loading)
{
return;
}
var chkBox = sender as CheckBox;
if (chkBox != null)
{
if (!chkBox.IsFocused)
{
return;
}
var cell = FindParent <DataGridCell>(chkBox);
var rowOwner = FindParent <DataGridRow>(cell);
var filedName = Convert.ToString(((DataRowView)(rowOwner.Item)).Row.ItemArray[2]);
if (string.IsNullOrEmpty(filedName))
{
return;
}
var contextMenu =
FindParent <ContextMenu>(
grid);
var mainGrid = MainGrid;
if (
!contextMenu
.IsOpen)
{
return;
}
if (filedName == "(Select All)")
{
foreach (var col in mainGrid.Columns)
{
col.Visibility = chkBox.IsChecked != null && chkBox.IsChecked.Value ? Visibility.Visible : Visibility.Collapsed;
}
Loading = true;
foreach (DataRow dataRow in ColumnChooserDataTable.Rows)
{
if (Convert.ToString(dataRow["columnField"]) != "(Select All)")
{
dataRow["chkBox"] = chkBox.IsChecked != null && chkBox.IsChecked.Value;
}
}
if (chkBox.IsChecked != null && chkBox.IsChecked.Value)
{
var count = mainGrid.Columns.Count(c => ConvertVisibiltyToBool(c.Visibility));
_checkedCount = count;
}
else
{
_checkedCount = 0;
}
Loading = false;
}
else
{
var parentCell = FindParent <DataGridCell>(chkBox);
var rowparentOwner = FindParent <DataGridRow>(parentCell);
ColumnChooserDataTable.AsEnumerable().First(
r =>
Convert.ToString(r["columnField"]) ==
Convert.ToString(((DataRowView)(rowparentOwner.Item)).Row.ItemArray[2]))["chkBox"] =
chkBox.IsChecked != null && chkBox.IsChecked.Value;
if (chkBox.IsChecked != null && chkBox.IsChecked.Value)
{
_checkedCount++;
}
else
{
_checkedCount--;
}
mainGrid.Columns[GetColumnIndex(mainGrid.Columns, filedName)].Visibility =
chkBox.IsChecked != null && chkBox.IsChecked.Value ? Visibility.Visible : Visibility.Collapsed;
Loading = true;
var count = mainGrid.Columns.Count;
if (_checkedCount > count)
{
_checkedCount = count;
}
ColumnChooserDataTable.AsEnumerable().First(r => r["columnField"].ToString() == "(Select All)")[
"chkBox"] = _checkedCount == count;
Loading = false;
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
